Einstein versus debye* in both the einstein model and the debye model the high-temperature heat capacity is of the form d for the einstein model calculate k in terms of the einstein temperature. d for the debye model calculate k in terms of the debye temperature. from your results give an approximate ratio teinstein/tdebye. compare your result to the val ues for silver given in fig. 2.4. (the ratio you cal culate should be close to the ratio stated in the caption of the figure. it is not exactly the same though. why might it not be? )

In an old-fashioned amusement park ride, passengers stand inside a 3.0-m-tall, 5.0-m-diameter hollow steel cylinder with their backs against the wall. the cylinder begins to rotate about a vertical axis. then the floor on which the passengers are standing suddenly drops away! if all goes well, the passengers will “stick” to the wall and not slide. clothing has a static coefficient of friction against steel in the range 0.60 to 1.0 and a kinetic coefficient in the range 0.40 to 0.70. part a what is the minimum rotational frequency, in rpm, for which the ride is safe? express your answer using two significant figures. f f = rpm